const archive/zip.fileHeaderLen

4 uses

	archive/zip (current package)
		reader.go#L251: 	var buf [fileHeaderLen]byte
		reader.go#L262: 	return int64(fileHeaderLen + filenameLen + extraLen), nil
		struct.go#L41: 	fileHeaderLen            = 30         // + filename + extra
		writer.go#L385: 	var buf [fileHeaderLen]byte